(19)

(11)

EP 0 500 711 A1

(12)

(43) Date of publication: 02.09.1992 Bulletin 1992/36 (21) Application number: 90917188.0 (22) Date of filing: 06.11.1990

(51) International Patent Classification (IPC):  G11B 20/ 18( . ) (86) International application number: PCT/US1990/006322 (87) International publication number: WO 1991/007721 (30.05.1991 Gazette 1991/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 09.11.1989 US 19890434009 15.02.1990 US 19900475187 (71) Applicant: EXABYTE CORPORATION Boulder, CO 80301 (US)	(72) Inventor: ZOOK, Christopher, P. Lafayette, CO 80026 (US) (74) Representative: Mittler, Enrico, et al  c/o Marchi & Mittler s.r.l. Viale Lombardia, 20 I-20131 Milano I-20131 Milano (IT)